NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1538116306 MD
Verify on CMS → Denzil Reid, MD
Critical Care Medicine (Internal Medicine) Physician in Westfield, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,646 in Critical Care Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
5K
Medicare Part D claims · 591 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
0%
generic claims · 70% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Denzil Reid, MD filed 4,820 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in Westfield, Massachusetts, prescribing 0% generic.
- 5K
- Part D claims, 2023
- 0%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥93rd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Denzil Reid, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,820 ≥ 93rd percentile 93% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Denzil Reid, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Denzil Reid, MD?
Quality data not reportedPrimary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
4,820 351% vs specialty avg
Specialty distribution in Massachusetts
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Critical Care Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Denzil Reid, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 115 W SILVER ST, Westfield, MA, 01085, with a listed phone of (413) 572-5099. NPI 1538116306 was issued on 05/27/2006.
Medicare Part D records for calendar year 2023 show 4,820 prescription claims written by this provider, covering 591 Medicare beneficiaries and totaling roughly $2.5 million in drug spend, split 70% brand-name and 0% generic by claim count, with an opioid prescribing rate of 0.3%.
Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,646 enrolled providers across 53 states and an average of 1,069 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1538116306 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/27/2006 |
Hospital and facility affiliations
Facilities where Denzil Reid, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Baystate Medical Practices Inc
Springfield, MA
Western Massachusetts Hospital
Westfield, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Denzil Reid, MD. To verify Denzil Reid, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Denzil Reid, MD - brand share 70.0%
Critical Care Medicine (Internal Medicine) Physician average
70% brand-name claims vs 0% generic, on 4,820 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
4,820
Total Claims
$2.5M
Total Drug Cost
591
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,308
- Total Day Supply
- 180,113
- Brand vs Generic
- 70% brand / 0% generic
- Brand Drug Cost
- $2.4M
- Opioid Claims
- 13 (0.3% rate)
- Antibiotic Claims
- 101
Patient Demographics
- Average Patient Age
- 71.4 years
- Avg HCC Risk Score
- 1.79
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 113, 65-74: 247, 75-84: 186, 85+: 45
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Denzil Reid, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
937 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
603 claims
- Ventolin Hfa 273
Ventolin Hfa
273 claims
- Breo Ellipta 259
Breo Ellipta
259 claims
- Anoro Ellipta 257
Anoro Ellipta
257 claims
- Incruse Ellipta 232
Incruse Ellipta
232 claims
- Montelukast Sodium 231
Montelukast Sodium
231 claims
- Prednisone 192
Prednisone
192 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 937 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 603 |
| Ventolin Hfa Albuterol Sulfate | 273 |
| Breo Ellipta Fluticasone/Vilanterol | 259 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 257 |
| Incruse Ellipta Umeclidinium Bromide | 232 |
| Montelukast Sodium | 231 |
| Prednisone | 192 |
| Fluticasone Propionate | 146 |
| Symbicort Budesonide/Formoterol Fumarate | 128 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in MA →
All providers in Massachusetts →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How Denzil Reid, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,646
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider
Denzil Reid, MD's 4,820 claims are above the specialty average of 1,069.
Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Reid.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Critical Care Medicine (Internal Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Denzil Reid, MD's specialty? ▼
Denzil Reid, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Westfield, Massachusetts. Credentials: MD.
How much does Denzil Reid, MD prescribe under Medicare Part D? ▼
In 2023, Denzil Reid, MD wrote 4,820 Medicare Part D claims totaling $2.5M in drug costs for 591 beneficiaries.
Where is Denzil Reid, MD located? ▼
Denzil Reid, MD is located at 115 W SILVER ST, Westfield, MA, 01085. Phone: (413) 572-5099.
What is Denzil Reid, MD's NPI number? ▼
Denzil Reid, MD's National Provider Identifier (NPI) is 1538116306, issued on 05/27/2006.
Does Denzil Reid, MD prescribe more brand-name or generic drugs? ▼
Denzil Reid, MD's prescribing is 70% brand-name and 0% generic drugs by claim count, with $2.4M in brand drug costs.
Does Denzil Reid, MD prescribe opioids? ▼
Yes, Denzil Reid, MD had 13 opioid claims in 2023 with an opioid prescribing rate of 0.3%.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,646 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does Denzil Reid, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Denzil Reid, MD's most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Ventolin Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Denzil Reid, MD accept Medicare? ▼
Denzil Reid, MD appears in CMS Medicare data with 4,820 Part D claims and 591 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Denzil Reid, MD's credentials? ▼
Denzil Reid, MD's NPI is 1538116306 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.